Abstract
SUMMARY The importance of mycorrhizal infection for the growth of wheat and barley sown in winter and spring was assessed in two field experiments. Low temperatures during winter restricted the development of mycorrhizal infection, and calculations of ‘thermal time’ indicated that the percentage of root length infected did not increase when mean temperatures were less than 5 °C. Hence infection was less in the winter-sown crops than in the spring-sown crops at early stages of plant development. However, the effects of mycorrhizal infection on growth were greater in winter-sown than in spring-sown wheat. At all levels of applied phosphorus up to 60 kg P/ha, artificial inoculation with mycorrhizal fungi increased the yields of both cereals at each sowing date by 17–25% after indigenous mycorrhizal fungi had been removed by fumigation, but the effects were smaller on non-fumigated plots. The results confirmed the potential importance of mycorrhizal infection for the growth of cereals. Mycorrhizal infection increased the phosphorus concentration in the plant tissue at very early stages of growth, but the effect generally declined with time.
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Claims 9
Claim · model-written summary
Winter temperatures restricted mycorrhizal infection development.
- Taxon
- wheat and barley
.jpg?width=60)
Hordeum vulgare
Triticum aestivume1 - Treatment
- Low temperatures during wintere0
- Interactor
- mycorrhizale0symbiont
- Outcome
- development of mycorrhizal infectione0
- Direction
- restrictede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Low temperatures during winter restricted the development of mycorrhizal infection”
e1“growth of wheat and barley sown in winter and spring”
Claim · model-written summary
Root length infection did not rise below mean temperatures of 5 °C.
- Taxon
- wheat and barleyHordeum vulgareTriticum aestivume1
- Treatment
- mean temperatures were less than 5 °Ce0
- Interactor
- mycorrhizale2symbiont
- Outcome
- percentage of root length infectede0
- Direction
- did not increasee0
Not reportedSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the percentage of root length infected did not increase when mean temperatures were less than 5 °C”
e2“Low temperatures during winter restricted the development of mycorrhizal infection”
e1“growth of wheat and barley sown in winter and spring”
Claim · model-written summary
Early infection was lower in winter-sown than spring-sown cereal crops.
- Taxon
- wheat and barleyHordeum vulgareTriticum aestivume1
- Interactor
- mycorrhizale2symbiont
- Outcome
- infectione0
- Direction
- lesse0
- Qualifier
- early stages of plant developmente0
- Comparator
- spring-sown cropse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“infection was less in the winter-sown crops than in the spring-sown crops at early stages of plant development”
e2“Low temperatures during winter restricted the development of mycorrhizal infection”
e1“growth of wheat and barley sown in winter and spring”
Claim · model-written summary
Mycorrhizal effects on wheat growth were greater in winter-sown than spring-sown crops.
- Taxon
- wheatTriticum aestivume0
- Interactor
- mycorrhizale0symbiont
- Outcome
- effects of mycorrhizal infection on growthe0
- Direction
- greatere0
- Comparator
- spring-sown wheate0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effects of mycorrhizal infection on growth were greater in winter-sown than in spring-sown wheat”
Claim · model-written summary
Inoculation increased wheat yield by 17–25% in fumigated plots at both sowing dates and phosphorus levels up to 60 kg P/ha.
- Taxon
- wheatTriticum aestivume1
- Treatment
- artificial inoculation with mycorrhizal fungie0
- Interactor
- mycorrhizal fungie0symbiont
- Outcome
- yieldse0
- Direction
- increasede0
- Value
- 17–25%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“artificial inoculation with mycorrhizal fungi increased the yields of both cereals at each sowing date by 17–25% after indigenous mycorrhizal fungi had been removed by fumigation”
e1“growth of wheat and barley sown in winter and spring”
Claim · model-written summary
Inoculation increased barley yield by 17–25% in fumigated plots.
- Taxon
- barleyHordeum vulgaree1
- Treatment
- artificial inoculation with mycorrhizal fungie0
- Interactor
- mycorrhizal fungie0symbiont
- Outcome
- yieldse0
- Direction
- increasede0
- Value
- 17–25%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“artificial inoculation with mycorrhizal fungi increased the yields of both cereals at each sowing date by 17–25% after indigenous mycorrhizal fungi had been removed by fumigation”
e1“growth of wheat and barley sown in winter and spring”
Claim · model-written summary
The inoculation yield effect was smaller in non-fumigated plots.
- Taxon
- wheat and barleyHordeum vulgareTriticum aestivume1
- Outcome
- effectse0
- Direction
- smallere0
- Qualifier
- non-fumigated plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effects were smaller on non-fumigated plots”
e1“growth of wheat and barley sown in winter and spring”
Claim · model-written summary
Mycorrhizal infection raised cereal tissue phosphorus concentration very early in growth.
- Taxon
- wheat and barleyHordeum vulgareTriticum aestivume1
- Organ / stage
- very early stages of growthe0
- Interactor
- Mycorrhizale0symbiont
- Outcome
- phosphorus concentration in the plant tissuee0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mycorrhizal infection increased the phosphorus concentration in the plant tissue at very early stages of growth”
e1“growth of wheat and barley sown in winter and spring”
Claim · model-written summary
The effect of mycorrhizal infection on tissue phosphorus generally declined over time.
- Taxon
- wheat and barleyHordeum vulgareTriticum aestivume1
- Outcome
- effecte0
- Direction
- declinede0
- Qualifier
- with timee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effect generally declined with time”
e1“growth of wheat and barley sown in winter and spring”
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See all 614 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.